The Immortal Heights by Sherry Thomas

All about him, fire raged. Black smoke billowed against the night sky, obscuring the stars. In the distance wyverns dove and screeched, their silhouettes lit by their own flames, coppery light upon darkly iridescent scales.

“No!” someone screamed. “No!”

But the boy heard nothing. His heart had already stopped beating.

As long as Titus and Iolanthe end up together and neither of them dies, I’ll be happy. It’s time to take the Bane DOWN.